20708992

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1$

素因数の和:369

約数の個数: 64

約数和(自身を含む): 45239040

約数和(自身を除く): 24530048

約数列:

[1, 2, 4, 8, 16, 17, 31, 32, 34, 62, 64, 68, 124, 128, 136, 248, 272, 307, 496, 527, 544, 614, 992, 1054, 1088, 1228, 1984, 2108, 2176, 2456, 3968, 4216, 4912, 5219, 8432, 9517, 9824, 10438, 16864, 19034, 19648, 20876, 33728, 38068, 39296, 41752, 67456, 76136, 83504, 152272, 161789, 167008, 304544, 323578, 334016, 609088, 647156, 668032, 1218176, 1294312, 2588624, 5177248, 10354496, 20708992]

約数ペア:

[(1, 20708992), (2, 10354496), (4, 5177248), (8, 2588624), (16, 1294312), (17, 1218176), (31, 668032), (32, 647156), (34, 609088), (62, 334016), (64, 323578), (68, 304544), (124, 167008), (128, 161789), (136, 152272), (248, 83504), (272, 76136), (307, 67456), (496, 41752), (527, 39296), (544, 38068), (614, 33728), (992, 20876), (1054, 19648), (1088, 19034), (1228, 16864), (1984, 10438), (2108, 9824), (2176, 9517), (2456, 8432), (3968, 5219), (4216, 4912)]